2.2 The Internet (incomplete)

Question 1

What is the internet?

Answer 1

The internet is a massive network of networks made up of computers and other electronic devices.

Question 2

What protocol does the internet use?

Answer 2

TCP/IP protocol
transmission control/ internet protocol

Question 3

What is the World Wide Web?

Answer 3

WWW is a collection of multimedia web pages stored on a website, which uses the internet to access info from servers and other computers.

Question 4

What is an URL?

Answer 4

Specifies the location of a webpage

Question 5

What kind of protocol is used in WWW? What is it used for?

Answer 5

Hyper text Markup Language (HTML)
Used to design web pages and to write http protocol.

Question 6

What is a web browser?

Answer 6

Software that connects to DNS to locate IP addresses.

Question 7

What is the difference between WWW and the internet?

Question 8

What are the requirements to connect a device to the internet?

Answer 8

1. A device e.g a computer or cellphone to connect
2. A router wireless or wired
3. A web browser
4. A telephone line/ mobile phone network connection
5. An internet service provider (ISP)

Question 9

What is the telephone network system called?

Answer 9

PTSN public switched telephone network

Question 10

What is ptsn used for?

Answer 10

Used to connect computers/devices and LAN’s between cities

Question 11

Telephone lines have changed from copper cables to fibre optic cables. Why?

Answer 11

Greater bandwidth and faster data transfer rates and less risk of corruption from interference

Question 12

What is VoIP?

Question 14

What is the purpose of a web browser as a software?

Answer 14

Allows users to access and display web pages on their screen and interpret HTML sent from websites.

Question 18

What do web browsers use to access websites?

Answer 18

URL’s

Question 19

What are URL’s represented by?

Answer 19

set of 4 numbers e.g 109.108.234.675

Question 20

What is the format of this representation?

Answer 20

protocol://website address/path/filename

Question 21

What is protocol usually?

Answer 21

http or https

Question 22

What is website address usually?

Answer 22

domain host - www
domain name - name of website
domain type - .com .org. net
country code - .uk .cy

Question 23

What is the path usually?

Answer 23

the web page but sometimes isn’t added because its part of the root directory of the website. (ask chatgpt)

Question 24

What is the filename usually?

Answer 24

The item from the web page

Question 25

What is the DNS?

Answer 25

The Domain Name service gives domain names for internet hosts and is a system for finding IP addresses of a domain name

Question 26

What does the DNS process involve?

Answer 26

converting a hosts name into an IP address the computer can understand

Question 27

What do domain names hep with regarding users?

Answer 27

Users aren't needed to memorize IP addresses if there are domain names for it

Question 28

Outline the DNS process.

Answer 28

1. User opens their web browser and types in a url and the web browser asks the DNS server 1 to find the IP address of the website 2. The DNS server cant find the url in its database and sends out request back to the DNS server 2 3. DNS server 2 finds the ip address sending back to the first DNS server which puts the url and its IP address into the database 4. IP address is sent back t the computer 5. Computer sets up a communication between the website server and the required pagesand so the web browser interprets the HTML and displays the info on the screen

Question 29

gobez?

Answer 29

gobez.